Pneumatic conveying apparatus.



G. W. BROWN.

PNEUMATIC CONVEYING APPARATUS.

APPLICATION FILED J'LIJ'E 28, 1910.

Patented Feb. 14, 1911.7

\ ing npparains or systems dos-r oifzishos 'lNfiilS and hoanse oflxhe vio This inixturo and the Water M; {the bond whore l'ho Water-is admitted. As o consequence of the thoronghness of the mixture of .tho dusi;

nnd' water, 1 am enabled to use o .oonsisting of merely n lnrgexooo .io which 1 may he freoof inter. o1 apparatus, tho-retina iion {in Velocity of the, ouiri'ono of air "reference to tho 1 aomnnpon'ying drn v SllOWlTlg in: whioh onAnLnsw. BROWN; 0]? onioAoo, ILLINOIS.

PNEUMATIC CONVEYING APPARATU$.

TTNITED STATES ATENT onnnjn.

' Specification of Letters Patent.

Patented Fob. 14, iioiii Application filed Juno 28, 1910. Serial No. 569,304.

To all whom it may concern:

Be it known that l, (hninnns W. Bnown, citizen of theUnited States, residing at Chicago, in the o'ounly of Cook and State of Illinois, have invented certain now and nsoful lm n'ovenionts in Pneumatic Coii'voying Apparatus, of which the following is a full, clear, concise, and oxaotdescription, refei once being had to the-nooon'iponying draw.- ings,- fr'irming a port of this specification.

-My invention rel-atosito pneumatic conveyand i505? particular sorvlco in conveying dust, ashes, small particles. I

My jnvontion prom .ii

has for one of its objects the pipo through which they are condnoied to a separator that, hoc-nnso OlZil'llS- thorough mixinto and because of the rednoed velocity-m lho separator, they will settl'o'to tho hoitoi'n substantially L of tho sopnrntmi and allow a pure current of an to pass on. In locomplishingthis resiilt, I preferably-employ sharp-bends in the dust conducting pipe and ii'il'ro'dn'oo tho'Wn-l'or forwotting the dusi nt one oft-hesohends, preferably thoinst one on-fore entering the separator, ohango in direction of the current of and dnsl; at ranch bond. serving io mix tlllil most thoroughly with each other that at the inst bond iho dust wili ho thorimghly waited. by the water hoco'nso of tho previous inor ongh mixingofthoair id d in preii-(n'ls 1a rotor {ion r i *1 will oxg ilo'm my invention more fni no oinhodiinont i'horoon tho pro-fin:

lai nlro his :1 diam-o m'ml io View ill or, other on oi'rnionns for so thoroughly mixing -Wltll .wnter nhile. stall in .tho

iths- "sudden is upon when the s' 'sioin is in operat'i t ngiinitiiian of ing apparatus including iih'o fooinros o; my "tion of which is lo nlod no blower -eooh hand in tho lino of ash or ninloriaicar-- tionnl view of a short portion oi the convoy ing pipe at a point innnodintoly in front. hi on ash :pi't door; and Fig. 4 is a doloil pot spoctivo View of n funnel used in guiding; nshos from on ash pit door through an opin ing in thooonveymg pipe. I

1 Like parts are indicated by similar characters of reference throughout tho diiioront figures.

1 how illustrated the preferred omhodi monlof my in vonlion as adopted specifically to an apparatnsfor removing ashes from a furnace room. 'Convoniently near the ash pit doorsooxionds in horizontal pipe 7) for receiving the ashes, this pipe, in the pro-- i oi'red arr: ngoinont, extending i.m1i'iedin1;eiy

in front of and below tho line of ash piiv doors. 1 Under each door is no opening into said-pipe, snidoponing having 21 romovohio vclosure 0 which may he removed to-nlioiv oshos i0 he raked into the pipe. For convenience, ninnnol; (Z is preferably provided of snoh design that when resting over one of illepipe openings, it will guide. ashes raked from thon'ssooialo ash pil' door into'tho pipe through which pipe the ashes are removed by n Sili'O'ig current of air produced by the blower o of any ,snilnhlo design, driven by thomoior Tho lol thand end of lhopipiv in order limo on may freely color the pipe lhi i. iho hhfiwor nay giio tho necefoai sir draft "9, .io I have shown in Foil out one. line oi ash or nintoizinl-collecting piping, i do no 'WlSif! io he limited 'to the number of such lines, and when more l'lmn one line is pros ent, each in? inhoso noi in nso may have its open end closed as by n hinged pinto g7 and its closures c in place over the openings no dor the ash pit doors, in order that the draft n lino of piping in use may ho as strong ns possihlo. Tho ashes m'o carried by the draft of air through the piping Z) to the top of lhe sopai'nior 72 which is preferably merely a large empty rooeptnolo free of inl-oi'nn apparatus, in which rooopmolo the ashes nro collootod, tho nir passing on out of the top of this roceplnolo through the pipe int some, oonvonimliinl'oi'inedin 1- p01 rying piping?) is a filling! 15in tho form of o T embodying novel foninres of my invonlion as profornhly florist-rooted.

Dirootly in line with rho incoming; current of air and material is the replaceable plug or filler Z of suitable heavy imperforate wear resisting refractory material such as'chilled cast iron, said plug or filler serving to re ceive the impact and therefore the wear due to the particles of material as their direction of motion is changed at the bend, and

serving further to insure a breakage of the tions of the piping between and at the sharp hen ds are .guarded against undue Wear by the flowing. material since this flow-ing'material is so evenly distributed in the flowing column of air, the friction between the piping andthe outer surface of thefiowing column of air and material causing a reduction speed of such outer' surface, this outer 1 a each fitting when they have passed surface thereby guarding the interior of the.

pipingagainst the more rapidly moving particles passing through such outer surfatc of the moving air column. The water ipe m is provided with a valve n to reguate the-amount of water used in wetting the conveyed materiallor 'ashes.

As I have shown my inventionthe turn in the pi e at eachfitting I: is so-abrupt as to furms .such impediment to the progress of the solid matter through the piping as practically'tdstop the flow of thesolid particles {through one length of piping and are on the 1 point of commencing eir passage through a contiguous length of piping. The air, however, does not have its speed materially reduced at the fittings, but owing to the sharp bends the air is caused to swirl and travel in eddies. Owin to the practical stoppage of the solid partlcles at the fittings, the air continuing at' its practically un iminishecl speed and swirling-and flowing in eddy currents at the fittings has opportunity thorou hly to become mixed with the solid partic es at the fittingsbefo're these solid articles resume their passage throughthe piping. At the final bend in of the pi .aing'water is added to the air and the solid particles that are there undergoing mixture.

'- in-the manner which has been described whereby the lighter articles are moistened and are'thereby rea' 11y separated from the air so'that the air and, particles when received in the separator i may readily be separated without the necessity .of employ- .mg complicated mechanism within the se arator, though I-do not wish to .belimited? to the character of the separator. The capaca of t e parator It is. ,su hth t th Y locity of the air, conveyed material and water is sufliciently reduced to insure the Settling of practically all the wet material to the bottom of the separator, or in other words to insure that a substantiallypure current of air will emerge from sai separator through the exhaust pipe 2'. The bottom of the separator is provided with a closure 0 covering an opening through .which the collected material may be drawn into a car, Wagon or other receptacle placed underneath. The Wet material atthe closure 0 may, if desired, be employed to form a suflicient-l good air seal at said closure to prevent mterference with the proper ex;

haustion of the separator by the'blower. A safety valve h will operate to admit air in the event of. excessive vacuum.

While I have herein shown and particularly described the preferred embodimentof my'invent-io-n and one use to which it may be particularlyapplied, I do not wish to be limited tolthe precise details of construction shown nor do I wish to be limited to the use specifically mentioned, as changes may readily be made without departing from the spirit of the invention, but, v

' Having thus described my invention, 1 claim as new and desire to secure by Letters Patent the following 1. A pneumatic conveying'apparatus, in-

cluding angularly related lengths of convey- 9 ing piping; a T-fitting uniting said lengths of piping; and a filler of imperforate wear resisting refractory material in the third open ing of the T-fitting and constituting anabut- .ment facing the direction of motion of the conveyed material in the incoming length of piping.

2. A pneumatic conveying apparatus including conveying piping having a sharp bend therein; a se arator 'to which the piping leads; means or efiecting forced passage of air through the piping toward the separator whereby material maybe conveyed through the piping toward the sepa- Y rator, the progress of the material through the piping being arrested at the sharp. bend in order-to allow the moving air thoroughly to become intermixed at the bend with the material; and means for introducing water at the bend Where'the thorough intermixture of' air and material occurs whereby the lighter-particlesof the material are 'satu air in thefseparaton Q In witnesswhereof, I hereunto subscribe my name thisglth day o f June, A. D., 1910,

ena weao'wu.

, Wit e ses! it-35m rated to facilitate their separation from the 

